attacks in afghanistan. three were killed by a roadside bomb. the fourth one died in a separatein sir gent attack. nine international troops have been killed this month. 280 so far this year. >>> bart and san francisco police have launched separate investigations into sunday night's fatal shooting at san francisco's civic center bart station. investigators say it began when two officers responded to a call about a drunk man carrying an open container of alcohol on the train platform. bart police chief says the two officers immediately found themselves in a very dangerous situation. >> the guy's armed with a knife. guy used a bottle as a weapon. one of our officers is injured. our officers used the force which they felt was necessary in defense of their life. >> one officer was armed with a taser but chose not to use it. investigators have still not released the name of the man who was killed. >>> time now 6:18. a sonoma county dive team recovered the body of a man who drowned in the russian river. 30-year-old juan martinez was swimming in the river with his girlfriend when they were s